India continues to reel under punishing heatwave conditions, with soaring temperatures making life unbearable for humans, animals, birds, and aquatic creatures alike. From drying ponds to scorching roads, the extreme weather has intensified suffering across several regions. Delhi, battling both severe heat and a worsening water crisis, is now witnessing alarming environmental damage.

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In a disturbing development, hundreds of fish were found dead in East Delhi’s Sanjay Lake.

Disturbing Scenes Emerge from Sanjay Lake

Residents visiting Sanjay Lake in Trilokpuri were shocked to find large numbers of dead fish floating near the edges of the shrinking water body. Several parts of the lake bed had already dried up, while the remaining water appeared shallow and stagnant.

Delhi isn’t just burning humans it’s killing wildlife too.

Hundreds of fish both small and large have been found dead floating on the surface of Sanjay Lake in Mayur Vihar, East Delhi.

The stench of rotting fish has spread across the surrounding area, making life unbearable for… pic.twitter.com/sfXsg3ztlE

— G K Gourav (@GouravGKRepots) May 22, 2026

Workers remove floating dead fish after a leak in an incoming pipeline aggravated the depletion of water levels amid a heat wave at the artificial Sanjay Lake in New Delhi on Friday. #heatwave pic.twitter.com/M9pLWlfEhd

— Shekhar Yadav (@Shekharyadav02) May 22, 2026

The incident has triggered fresh concerns over the fragile condition of Delhi’s urban lakes, especially during periods of extreme heat. 

Water Supply Disruption Worsened the Crisis

Officials linked the incident to repair work underway on a major pipeline connected to the Kondli Sewage Treatment Plant. The pipeline supplies treated water to the lake, and the reduced inflow reportedly caused water levels to fall rapidly.

पूर्वी दिल्ली के त्रिलोकपुरी इलाके में स्थित संजय लेक अब मछलियों के लिए कब्रिस्तान बन गई है. यहां सैकड़ों मरी हुई मछलियां पानी की सतह पर तैर रही हैं! आख़िर कौन जिम्मेदार, कोंडली सीवर ट्रीटमेंट प्लांट से भी नहीं दिया गया पानी और ना @DelhiGovDigital को इसकी परवाह । @LtGovDelhi… pic.twitter.com/DjayMGXr3G

— Sanjeev Yadav (@sanjeevyadav007) May 23, 2026

With temperatures remaining exceptionally high, oxygen levels in the lake water are believed to have dropped sharply, creating deadly conditions for aquatic life. 

Heatwave and Pollution Created a Dangerous Mix

Environmental experts say intense heatwaves can severely affect water bodies by reducing dissolved oxygen levels. As lakes shrink, pollutants and waste materials become more concentrated, further contaminating the water.

The stagnant condition of the lake is also suspected to have accelerated the crisis. Reports suggest species such as Gambusia fish, tilapia, and carp-like freshwater fish were among those killed.

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Questions Raised Over Urban Lake Management

The mass fish deaths have once again highlighted concerns over environmental planning and maintenance of water bodies in the national capital. Residents and experts are urging authorities to take urgent steps to restore water quality and ensure better ecosystem protection.

Authorities are expected to investigate the incident further and review preventive measures to avoid similar ecological disasters in the future.